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Spindles, Spheres and a Few Jets: The Radiation Gasdynamics of Planetary Nebulae

Published online by Cambridge University Press:  07 August 2017

Adam Frank
Adam Frank*
Affiliation:
Astronomy Department, FM-20, University of Washington, Seattle WA 98195, U.S.A.

Abstract

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We present the results of accurate numerical radiation-gasdynamic models for spherical (1-d) and aspherical (2-d) planetary nebulae (PNe). The models confirm and surpass previous efforts by recovering the detailed morphologies, kinematics, and ionization structure of real PNe. Our 1-d simulations include the evolution of the central star and a superwind/AGB wind interaction. The importance of the forward wind-blown shock and time-dependant ionization in redistributing mass in the nebulae is demonstrated. Our 2-d simulations, the first of their kind, confirm that aspherical PNe can develop through the interaction of a spherical fast wind with an aspherical superwind. We demonstrate that the full range of nebular morphologies can be recovered by considering the combination of wind/wind interactions, the ionization state of the gas and the projection angle on the sky

Type
IV. Planetary Nebulae Connection: Evolution from the AGB
Information
Symposium - International Astronomical Union , Volume 155: Planetary Nebulae , 1993 , pp. 311 - 314
Copyright
Copyright © Kluwer 1993 

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